[llvm] [SCEV] Avoid erase+insert in constant folding (PR #101642)

[Nikita Popov via llvm-commits]

nikic wrote:

New compile-time numbers: http://llvm-compile-time-tracker.com/compare.php?from=5d28678277195e0b136198323ef4afa4561f8796&to=74a9c24727c07e21dfa3a61b8ac802604e1144f4&stat=instructions%3Au

Now without code size changes as the order of operands no longer changes... but we also don't get any clear improvements anymore, so I'll go ahead and abandon this patch...


https://github.com/llvm/llvm-project/pull/101642